Help I have a problem....

[dangermouse007]

Ok Guys here goes..

Out tonight....and the following happened..

Bike started what felt like Sneezing only in 5th gear under high load...all other gears fine..

Now the bike only in 5th, if you ticklet the throttle in 5th all is ok, but if you nail it, it then revs up a little, pulls then revs up a little, pulls then revs up a little... but only in 5th you can nail 1,2,3,4, no problem but 5th has now gone from sneezing to reving up a little then pulls... (get a max of about 60mph now), but 4th up to 70mph...

Though it was fuel starvation at first, but now feels like clutch slip...but its only in 5th..

Gear Box ??? but why only 5th, and would it not just, not engage or spin up with no drive

Clutch ??? but why only 5th

Thanks in advance for any advice..

DM (with the Right hump now)

[cmg]

are there any horrible noises when 5th is selected?

[story_rtw]

It sounds like a clutch problem. It's typical for clutch problems to appear in higher gears first, probably because the motor has to work much harder to turn the higher gears.

What year bike and how many miles? Perhaps it's just time for a new clutch?

Story

[RichieGoatGruff]

Sounds like she's popping out of gear and back in....prob'ly rounded the dogs off.

[StreetbikePimp]

I don't know what the sneezing means, but the reving up and then pull is your clutch wearing out.

It's only doing it in 5th because your gearing is tallest in 5th and is the greatest amount of load that your bike will see. When you shift into 4th, you're actually putting less load on the clutch requiring a less amount of friction to engage your tranny.

This is the easiest to check also. Lay your bike on it's side and remove the cluch cover plate. Remove the 6 bolts and springs, then start pulling out your clutch plates. (remember what order they are in) The little pads on your clutch plates are probaly really thin.

[dangermouse007]

Hi Thanks Guys...

Is a WR450 03, has about 2000 miles on it.... have spoken to people and its not jumping its feels like its slipping They say 5th is the 1st gear to go... so I'm gonna go with a new clutch as its the cheapest, then if it not that its engine time...

Question: Over here there is no Difference in Price from OEM, EBC or Barnett, so is it better to get Genuine Yamaha Clutch or Barnett

Many thanks for you help.. Finger crossed it not the Tranny

[MotoGoalie]

I've had bad times with Barnett plates twice when I used them for a 92 CR250 and CR500. Grabby and the specs were off far enough it was difficult to get the proper lever adjustment.

I'd go OEM, when its time to switch out the plates.

[StreetbikePimp]

Don't know which plates are best. If the cost is the same, I would go with OEM.

[dangermouse007]

Ordered OEM clutch .. got old clutch out... it looks fine.. but saying that i don't know what a F*cked clutch looks like .. will update once new clutch installed ... thanks for your help guys

[StreetbikePimp]

I remebered a tip I read in Dirt Rider once.

When installing the new clutch plates, soak the new plates in oil overnight before the install. It helps decrease the amount of break-in time. The bike should be ready to ride after the install is done.

[Matty05]

I remebered a tip I read in Dirt Rider once.

When installing the new clutch plates, soak the new plates in oil overnight before the install. It helps decrease the amount of break-in time. The bike should be ready to ride after the install is done.

Great tip! I used to do this all the time with my YZ80.

[dangermouse007]

Thanks .. great advice for TT as normal

[dangermouse007]

****ing Gearbox... Change the Clutch... and guess what still the same problem ... so guy sany hints and tips before I take the engine out.... the Local Shop will do the work, but to save money I will take the engine out and refit....

[StreetbikePimp]

I've never taken an engine out before, so I don't have any good advice for you.

If you don't have a manual, I would get one and use it. The Yamaha manuals are very good.

[Treborlennon]

Hi mate just wondering have you did the 04 starter mod to your bike. Hope you have . I never thought it would happen to me , mine sheered starter and im still having problems after the mod. What jets are you running mate.

[Treborlennon]

Hi mate got an 03 myself. Just wondering have you did 04 starter mod. I didnt think it would happen to me. Backfire sheered starter motor so I did the mod still having problems though.Think it may be down to jetting may be an import and need jetting changed. What pipe you got on yours if any.

[dangermouse007]

Hi,

I checked when I bought the bike and yes its had the Woodruff keys 04 Modification, Its defo the GearBox, as its only doing it in 5th, and no other gear, Clutch has now been replace...and searching through the threads on here it can only be Gearbox or Clutch...

I have got the Manual, but as Most of you on here have taken your engines out due to this kind of thing just wondered if there where any Hints and Tips, that are not covered in the Manual.

Thanks again Guys ...

[Treborlennon]

Hi mate I have a wr 450 03 having major problems with starter at the moment, u may have seen my post. Just wondering have you did the 04 upgrade on your bike or was it done to it.Mine backfired and sheered the six bolts that hold the sarter on and destryed it.Did the upgrade and it had done near the same thing again. I am in Uk so it not an import bike.

[dangermouse007]

Hi,

It was done before I got the bike, the Bloke had it go him, Sorry can't really help on this issue, Mine in the garage as we speak... Just waiting to see the parts sheet for it... !!!!!